The suspension fault codes really need to be read before doing anything to avoid unnecessary expense investigating and replacing components.

But worth trying NOT lowering it, and see what happens. This may help with diagnosis. .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

I will stop lowering it and see how i get on.

Will also look at getting it scanned to see if it has any specific codes in the memory.

Thank you both for the replies

I stopped lowering for a couple of days and still got the fault.

Last night it came up with a message about raising slowly and that it will resume once the system has cooled.

From this im assuming the compressor may be over heating. Which would indicate a leak somewhere.

I have not noticed the car has dropped on any of the corners, maybe the leak could be in the boot around the compressor.

You should check for any leaks, but more likely the compressor has had it, you will have to do a time vs money assessment. You should be able to find a "barebones" compressor, which will save some money, if you are comfortable with a bit of dismantling and simple wiring. I could be wrong.... .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

sounds like the compressor.  D3 TDV6 SE 2006
FFRR TD6 Vogue SE Overfinch 2006
RRS TDV6 HSE 2007
FFRR 4.4 TDV8 Overfinch 2012

I had a similar issue last year. A red dot over one of the wheels and slow compression. Then total suspension collapse where car was driving on its wheels. Called my specialist who said height sensor. Less than £200 later problem solved with replaced height sensor. Current:
1999 SL500
2006 Mini One Chrome wrapped
2008 FFRR 4.2sc

Put the car into off road mode, if the car achieves that mode and you don't hear a big hissing sound (as you open the hole that's leaking, usually covered by the bag being partially rolled over) then look at the wiring to all the height sensors (clearly visible through the wheel arch on off road height) Don't be afraid to give each wire a little pull!!! I often find broken wires that are only held together by the sheathing, but the wire inside had fatigued and snapped!

I have looked a little further into this and I have come to a possible conclusion as suggested that the compressor is at fault. Shame really as it was only bought in 2017.

The car comes up with a message now saying special programs turned off and I can't do any thing with the suspension.

Today I removed the cover to the compressor. If I start the car and quickly press to raise the suspension it expells some air from the exhaust valve, the compressor runs fun a couple of seconds and then cuts out with suspension fault on the dash.

I have attached a picture of the compressor, could somebody please tell me what version I have? I'm not sure if that is a Hitachi or Dunlop.

I have also attached a picture of the fault codes.

Thanks for all your advice